Daikin EWYE019CZN-A1 Handleiding

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Pagina 1/47

Original Instructions

Public

REV

Date

12/2024

Supersedes

Installation, Operation and Maintenance Manual

Air to water heat pump units with scroll compressors

EWYE~CZ

Installation, Maintenance and Operation Manual

D-EIMHP01812-24_00EN

D-EIMHP01812-24_00EN 2/47 
CONTENTS 
 
INTRODUCTION ........................................................................................................................................................... 4 
1  Precautions against residual risks ......................................................................................................................... 4 
2  General description ............................................................................................................................................... 5 
3  Information about the refrigerant ........................................................................................................................... 6 
4  Installation information .......................................................................................................................................... 6 
RECEIPT OF THE UNIT................................................................................................................................................ 9 
STORAGE ................................................................................................................................................................... 10 
1  Operation limits ................................................................................................................................................... 10 
MECHANICAL INSTALLATION ................................................................................................................................... 12 
1  Safety .................................................................................................................................................................. 12 
2  Handling and lifting .............................................................................................................................................. 12 
2.1  Lifting the MONO unit .............................................................................................................................. 13 
2.2  Lifting the DUAL unit ................................................................................................................................ 13 
3  Positioning and assembly ................................................................................................................................... 14 
3.1  Mounting the main switch handle ............................................................................................................. 17 
4  Minimum space requirements ............................................................................................................................. 17 
5  Additional installation site requirements .............................................................................................................. 19 
6  Noise and acoustic protection ............................................................................................................................. 20 
7  Water circuit for connection with the unit ............................................................................................................. 21 
7.1  Water piping ............................................................................................................................................. 21 
7.2  Flow-switch .............................................................................................................................................. 21 
7.3  Preparing and checking the water circuit connection ............................................................................... 22 
7.4  Water pressure ........................................................................................................................................ 22 
7.5  Hydraulic diagram .................................................................................................................................... 23 
8  Water treatment .................................................................................................................................................. 24 
9  Water pressure drops for filters ........................................................................................................................... 24 
10 Pump kit mounted on board (Optional) ............................................................................................................... 24 
11 Operating stability and minimum water content in the system............................................................................. 25 
11.1 Cooling Mode ........................................................................................................................................... 25 
11.2 Heating Mode .......................................................................................................................................... 26 
12 Calibrating the expansion vessel ......................................................................................................................... 27 
13 Antifreeze protection for BPHE ........................................................................................................................... 28 
ELECTRICAL INSTALLATION .................................................................................................................................... 29 
1  General specifications ......................................................................................................................................... 29 
2  Electric connections ............................................................................................................................................ 29 
3  Cable requirements ............................................................................................................................................. 30 
3.1  Maximum cable dimension ...................................................................................................................... 30 
3.2  Safety device requirements ..................................................................................................................... 31 
4  Phase unbalance ................................................................................................................................................ 31 
OPERATOR’S REPONSIBILITIES .............................................................................................................................. 32 
MAINTENANCE .......................................................................................................................................................... 33 
1  Pressure / temperature table ............................................................................................................................... 34 
2  Routine maintenance .......................................................................................................................................... 34 
2.1  Air Heat Exchanger Maintenance ............................................................................................................ 34 
2.2  Electrical Maintenance ............................................................................................................................. 35 
2.3  Service and limited warranty .................................................................................................................... 35 
2.4  Refrigerant circuit scheme ....................................................................................................................... 38 
LIST OF THE LABELS APPLIED TO THE UNIT ......................................................................................................... 41 
COMMISSIONING ....................................................................................................................................................... 42 
IMPORTANT INFORMATION ON THE REFRIGERANT USED ................................................................................. 43 
PERIODIC CHECKS AND COMMISSIONING OF PRESSURE EQUIPMENT ........................................................... 44 
DISMISSION AND DISPOSAL .................................................................................................................................... 45 
 
 
   